import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;

//召唤神龙
public class CyclicBarrierDemo {

    public static void main(String[] args) {

        CyclicBarrier cyclicBarrier = new CyclicBarrier(7, () -> {
            System.out.println("召唤神龙");
        });

        for (int i = 1; i < 8; i++) {
            final int finalI = i;
            new Thread(() -> {
                System.out.println(Thread.currentThread().getName() + "获得第" + finalI + "个龙珠");
                try {
                    cyclicBarrier.await();
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
                System.out.println(Thread.currentThread().getName() + "失去了第" + finalI + "个龙珠");
            }, String.valueOf(i)).start();
        }

    }

}
